<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <link rel="stylesheet" href="../../bootstrap-3.3.7/css/bootstrap.min.css">
    <style>
        .row2>div{
            border: 1px solid mediumpurple;
        }
    </style>



</head>
<body>

<div class="row2">
    <div class="col-xs-12 col-md-8">11111111</div>
    <div class="col-xs-6 col-md-4">1111111111</div>
</div>

<div class="row2">
    <div class="col-xs-6 col-md-4">2222222222</div>
    <div class="col-xs-6 col-md-4">2222222222</div>
    <div class="col-xs-6 col-md-4">2222222222</div>
</div>

<div class="row2">
    <div class="col-xs-6">3333333333</div>
    <div class="col-xs-6">3333333333</div>
</div>


<script src="../jquery.js"></script>
<script src="../../bootstrap-3.3.7/js/bootstrap.min.js"></script>
</body>
</html>